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229 lines
7.6 KiB
229 lines
7.6 KiB
/* |
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* Copyright (c) 2001-2003 Swedish Institute of Computer Science. |
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* Copyright (c) 2003-2004 Leon Woestenberg <leon.woestenberg@axon.tv> |
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* Copyright (c) 2003-2004 Axon Digital Design B.V., The Netherlands. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without modification, |
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* are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright notice, |
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* this list of conditions and the following disclaimer in the documentation |
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* and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
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* OF SUCH DAMAGE. |
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* |
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* This file is part of the lwIP TCP/IP stack. |
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* |
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* Author: Adam Dunkels <adam@sics.se> |
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* |
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*/ |
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#ifndef __NETIF_ETHARP_H__ |
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#define __NETIF_ETHARP_H__ |
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#include "lwip/opt.h" |
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#if LWIP_ARP || LWIP_ETHERNET /* don't build if not configured for use in lwipopts.h */ |
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#include "lwip/pbuf.h" |
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#include "lwip/ip_addr.h" |
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#include "lwip/netif.h" |
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#include "lwip/ip.h" |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#ifndef ETHARP_HWADDR_LEN |
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#define ETHARP_HWADDR_LEN 6 |
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#endif |
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#ifdef PACK_STRUCT_USE_INCLUDES |
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# include "arch/bpstruct.h" |
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#endif |
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PACK_STRUCT_BEGIN |
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struct eth_addr { |
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PACK_STRUCT_FIELD(u8_t addr[ETHARP_HWADDR_LEN]); |
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} PACK_STRUCT_STRUCT; |
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PACK_STRUCT_END |
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#ifdef PACK_STRUCT_USE_INCLUDES |
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# include "arch/epstruct.h" |
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#endif |
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#ifdef PACK_STRUCT_USE_INCLUDES |
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# include "arch/bpstruct.h" |
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#endif |
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PACK_STRUCT_BEGIN |
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/** Ethernet header */ |
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struct eth_hdr { |
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#if ETH_PAD_SIZE |
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PACK_STRUCT_FIELD(u8_t padding[ETH_PAD_SIZE]); |
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#endif |
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PACK_STRUCT_FIELD(struct eth_addr dest); |
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PACK_STRUCT_FIELD(struct eth_addr src); |
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PACK_STRUCT_FIELD(u16_t type); |
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} PACK_STRUCT_STRUCT; |
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PACK_STRUCT_END |
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#ifdef PACK_STRUCT_USE_INCLUDES |
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# include "arch/epstruct.h" |
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#endif |
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#define SIZEOF_ETH_HDR (14 + ETH_PAD_SIZE) |
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#if ETHARP_SUPPORT_VLAN |
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#ifdef PACK_STRUCT_USE_INCLUDES |
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# include "arch/bpstruct.h" |
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#endif |
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PACK_STRUCT_BEGIN |
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/** VLAN header inserted between ethernet header and payload |
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* if 'type' in ethernet header is ETHTYPE_VLAN. |
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* See IEEE802.Q */ |
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struct eth_vlan_hdr { |
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PACK_STRUCT_FIELD(u16_t prio_vid); |
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PACK_STRUCT_FIELD(u16_t tpid); |
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} PACK_STRUCT_STRUCT; |
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PACK_STRUCT_END |
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#ifdef PACK_STRUCT_USE_INCLUDES |
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# include "arch/epstruct.h" |
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#endif |
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#define SIZEOF_VLAN_HDR 4 |
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#define VLAN_ID(vlan_hdr) (htons((vlan_hdr)->prio_vid) & 0xFFF) |
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#endif /* ETHARP_SUPPORT_VLAN */ |
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#ifdef PACK_STRUCT_USE_INCLUDES |
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# include "arch/bpstruct.h" |
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#endif |
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PACK_STRUCT_BEGIN |
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/** the ARP message, see RFC 826 ("Packet format") */ |
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struct etharp_hdr { |
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PACK_STRUCT_FIELD(u16_t hwtype); |
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PACK_STRUCT_FIELD(u16_t proto); |
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PACK_STRUCT_FIELD(u8_t hwlen); |
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PACK_STRUCT_FIELD(u8_t protolen); |
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PACK_STRUCT_FIELD(u16_t opcode); |
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PACK_STRUCT_FIELD(struct eth_addr shwaddr); |
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PACK_STRUCT_FIELD(struct ip_addr2 sipaddr); |
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PACK_STRUCT_FIELD(struct eth_addr dhwaddr); |
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PACK_STRUCT_FIELD(struct ip_addr2 dipaddr); |
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} PACK_STRUCT_STRUCT; |
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PACK_STRUCT_END |
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#ifdef PACK_STRUCT_USE_INCLUDES |
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# include "arch/epstruct.h" |
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#endif |
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#define SIZEOF_ETHARP_HDR 28 |
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#define SIZEOF_ETHARP_PACKET (SIZEOF_ETH_HDR + SIZEOF_ETHARP_HDR) |
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#if ETHARP_SUPPORT_VLAN && defined(LWIP_HOOK_VLAN_SET) |
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#define SIZEOF_ETHARP_PACKET_TX (SIZEOF_ETHARP_PACKET + SIZEOF_VLAN_HDR) |
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#else /* ETHARP_SUPPORT_VLAN && defined(LWIP_HOOK_VLAN_SET) */ |
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#define SIZEOF_ETHARP_PACKET_TX SIZEOF_ETHARP_PACKET |
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#endif /* ETHARP_SUPPORT_VLAN && defined(LWIP_HOOK_VLAN_SET) */ |
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/** 5 seconds period */ |
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#define ARP_TMR_INTERVAL 5000 |
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#define ETHTYPE_ARP 0x0806U |
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#define ETHTYPE_IP 0x0800U |
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#define ETHTYPE_VLAN 0x8100U |
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#define ETHTYPE_IPV6 0x86DDU |
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#define ETHTYPE_PPPOEDISC 0x8863U /* PPP Over Ethernet Discovery Stage */ |
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#define ETHTYPE_PPPOE 0x8864U /* PPP Over Ethernet Session Stage */ |
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/** MEMCPY-like macro to copy to/from struct eth_addr's that are local variables |
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* or known to be 32-bit aligned within the protocol header. */ |
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#ifndef ETHADDR32_COPY |
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#define ETHADDR32_COPY(src, dst) SMEMCPY(src, dst, ETHARP_HWADDR_LEN) |
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#endif |
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/** MEMCPY-like macro to copy to/from struct eth_addr's that are no local |
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* variables and known to be 16-bit aligned within the protocol header. */ |
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#ifndef ETHADDR16_COPY |
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#define ETHADDR16_COPY(src, dst) SMEMCPY(src, dst, ETHARP_HWADDR_LEN) |
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#endif |
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#if LWIP_ARP /* don't build if not configured for use in lwipopts.h */ |
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/** ARP message types (opcodes) */ |
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#define ARP_REQUEST 1 |
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#define ARP_REPLY 2 |
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/** Define this to 1 and define LWIP_ARP_FILTER_NETIF_FN(pbuf, netif, type) |
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* to a filter function that returns the correct netif when using multiple |
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* netifs on one hardware interface where the netif's low-level receive |
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* routine cannot decide for the correct netif (e.g. when mapping multiple |
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* IP addresses to one hardware interface). |
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*/ |
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#ifndef LWIP_ARP_FILTER_NETIF |
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#define LWIP_ARP_FILTER_NETIF 0 |
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#endif |
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#if ARP_QUEUEING |
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/** struct for queueing outgoing packets for unknown address |
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* defined here to be accessed by memp.h |
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*/ |
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struct etharp_q_entry { |
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struct etharp_q_entry *next; |
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struct pbuf *p; |
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}; |
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#endif /* ARP_QUEUEING */ |
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#define etharp_init() /* Compatibility define, not init needed. */ |
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void etharp_tmr(void); |
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s8_t etharp_find_addr(struct netif *netif, ip_addr_t *ipaddr, |
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struct eth_addr **eth_ret, ip_addr_t **ip_ret); |
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err_t etharp_output(struct netif *netif, struct pbuf *q, ip_addr_t *ipaddr); |
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err_t etharp_query(struct netif *netif, ip_addr_t *ipaddr, struct pbuf *q); |
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err_t etharp_request(struct netif *netif, ip_addr_t *ipaddr); |
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/** For Ethernet network interfaces, we might want to send "gratuitous ARP"; |
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* this is an ARP packet sent by a node in order to spontaneously cause other |
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* nodes to update an entry in their ARP cache. |
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* From RFC 3220 "IP Mobility Support for IPv4" section 4.6. */ |
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#define etharp_gratuitous(netif) etharp_request((netif), &(netif)->ip_addr) |
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void etharp_cleanup_netif(struct netif *netif); |
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#if ETHARP_SUPPORT_STATIC_ENTRIES |
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err_t etharp_add_static_entry(ip_addr_t *ipaddr, struct eth_addr *ethaddr); |
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err_t etharp_remove_static_entry(ip_addr_t *ipaddr); |
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#endif /* ETHARP_SUPPORT_STATIC_ENTRIES */ |
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#if LWIP_AUTOIP |
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err_t etharp_raw(struct netif *netif, const struct eth_addr *ethsrc_addr, |
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const struct eth_addr *ethdst_addr, |
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const struct eth_addr *hwsrc_addr, const ip_addr_t *ipsrc_addr, |
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const struct eth_addr *hwdst_addr, const ip_addr_t *ipdst_addr, |
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const u16_t opcode); |
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#endif /* LWIP_AUTOIP */ |
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#endif /* LWIP_ARP */ |
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err_t ethernet_input(struct pbuf *p, struct netif *netif); |
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#define eth_addr_cmp(addr1, addr2) (memcmp((addr1)->addr, (addr2)->addr, ETHARP_HWADDR_LEN) == 0) |
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extern const struct eth_addr ethbroadcast, ethzero; |
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#endif /* LWIP_ARP || LWIP_ETHERNET */ |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* __NETIF_ARP_H__ */
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